A new gamma-ray detector with gold-plated gas electron multiplier

Koike, T.; Uno, S.; Uchida, Tomohisa; Sekimoto, M.; Murakami, Takeshi; Miyama, K.; Shoji, M.; Fujiwara, Takehiro; Nakano, E.; Chiba, J.

doi:10.1016/j.nima.2011.05.071

Cited by 15 publications

(11 citation statements)

References 9 publications

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“…Fig. 68 shows a comparison of computed and measured detection efficiency as a function of photon energy for a detector using a gold-plated GEM foil as converter and first amplifier, followed by a cascade of three standard foils for full amplification; the efficiency can be increased with the use of multiple Au-coated GEMs in cascade [133]. A similar approach has been pursued in the development of high-rate hard X-ray detectors for portal imaging in medical diagnostics [134,135].…”

Section: Detection and Localization Of Neutral Radiationmentioning

confidence: 99%

The gas electron multiplier (GEM): Operating principles and applications

Sauli

2016

Nuclear Instruments and Methods in Physics Research Section A:

341

197

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a b s t r a c tIntroduced by the author in 1997, The Gas Electron Multiplier (GEM) constitutes a powerful addition to the family of fast radiation detectors; originally developed for particle physics experiments, the device and has spawned a large number of developments and applications; a web search yields more than 400 articles on the subject. This note is an attempt to summarize the status of the design, developments and applications of the new detector.

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Section: Detection and Localization Of Neutral Radiationmentioning

confidence: 99%

The gas electron multiplier (GEM): Operating principles and applications

Sauli

2016

Nuclear Instruments and Methods in Physics Research Section A:

341

197

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“…The photon conversion efficiency of GEM detectors (Chapter 13) can be enhanced coating the active electrodes with a high-Z metal; Figure 3.25 shows computed and measured values of detection efficiency of a single detector with the electrodes coated with 3 µm of gold, as a function of photon energy (Koike et al, 2011); multiple GEM structures can be used to increase the efficiency.…”

Section: Use Of Converters For Hard Photons Detectionmentioning

confidence: 99%

“…Figure 3.25 Computed and measured detection efficiency of a gold-coated GEM electrode as a function of photon energy(Koike et al, 2011). By kind permission of Elsevier.…”

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confidence: 99%

Gaseous Radiation Detectors

Sauli

2014

113

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Widely used in high-energy and particle physics, gaseous radiation detectors are undergoing continuous development. The first part of this book provides a solid background for understanding the basic processes leading to the detection and tracking of charged particles, photons, and neutrons. Continuing then with the development of the multi-wire proportional chamber, the book describes the design and operation of successive generations of gas-based radiation detectors, as well as their use in experimental physics and other fields. Examples are provided of applications for complex events tracking, particle identification, and neutral radiation imaging. Limitations of the devices are discussed in detail. Including an extensive collection of data and references, this book is ideal for researchers and experimentalists in nuclear and particle physics.

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“…A novel GEM foil is plated on both surfaces by gold, with which gamma rays interact easily. The GEM foils of the conversion layer are plated by a layer of gold 3 µm thick on both surfaces [5]. In order to obtain higher detection efficiency, several gold-plated GEM foils are stacked in a chamber.…”

Section: Jinst 7 C01078mentioning

confidence: 99%

A new gamma camera with a Gas Electron Multiplier

et al. 2012

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We have developed a prototype gaseous gamma camera with a Gas Electron Multiplier (GEM) for biomolecular analysis and medical applications. The system consists of three devices: a detector, an Ethernet hub, and a PC. The detector consists of a GEM-chamber and integrated readout electronics. The GEM-chamber consists of three parts: the gamma-ray conversion and amplification layers consisting of GEM foils, and a readout component. To increase gamma-raydetection efficiency, we constructed a new type of GEM foil. The gamma-ray conversion layers are plated with gold 3 µm thick on both surfaces. In order to test the performance of the prototype camera, several measurements were performed with a phantom filled with 99m Tc (141 keV) as the radioactive source, and two-dimensional (2D) images were obtained using a pinhole collimator. The camera showed good capability to resolve objects of a few mm 2 . We believe that this system will offer new knowledge in biomolecular analysis and medical applications.

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A new gamma-ray detector with gold-plated gas electron multiplier

Cited by 15 publications

References 9 publications

The gas electron multiplier (GEM): Operating principles and applications

The gas electron multiplier (GEM): Operating principles and applications

Gaseous Radiation Detectors

A new gamma camera with a Gas Electron Multiplier

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